<!-- 作业要求，实现小滴课堂的二维码和联系方式。 -->
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        img{
            width: 100px;
            height: 100px;
            position: fixed;
            right: 10px;
            bottom: 370px;
            object-fit: contain;
            z-index: 99;
        }
        .box{
            position:fixed;
            right: 10px;
            bottom: 120px;
            z-index: 99;
        }
        .box div{
            width: 50px;
            height: 50px;
            margin-bottom: 10px;
        }
        .a{
            background-color: red;
        }
        .b{
            background-color: blue;
        }
        .c{
            background-color: green;
        }
        .d{
            padding:0 8px;
            position: fixed;
            right: 69px;
            bottom: 138px;
            background-color:rgba(47, 255, 109, 0.801);
            text-align: center;
            color: aliceblue;
            height: 20px;
            width: 164px;
            line-height: 20px;
        }
        .dd{
            width: 0;
            height: 0;
            border-width: 10px;
            border-style: solid;
            border-color: transparent transparent transparent rgba(47, 255, 109, 0.801);
            position: fixed;
            right: 53px;
            bottom: 138px;
            z-index: 99;
        }
    </style>
</head>
<body>
    <div class="box">
        <div class="a"></div>
        <div class="b"></div>
        <div class="c"></div>
    </div>
    <div class="d">  
        <div class="dd"></div>
        现在就跟客服聊一聊。
    </div>
  
        <img src="https://front.cdn.xdclass.net/images/logo.webp" alt="">
</body>
</html>